#VU4140 Heap-based buffer overflow in memcached - CVE-2016-8706

Vulnerability identifier: #VU4140

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-8706

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
memcached
Server applications / Web servers

Vendor: Memcached

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the process_bin_sasl_auth() function due to integer overflow. A remote attacker can send specially crafted Memcached binary protocol commands, trigger heap-based buffer overflow and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

memcached: 1.4.31

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External links
https://www.talosintelligence.com/reports/TALOS-2016-0221/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.